Wards



(No Model.)

M. L. EDWARDS & G. M. SMITH.

TUYERE.

No. 249,912. l mented Nov. 22,1881.

and effective means for operating the blast-reg- NITED' STATES PATENTFFICE.

MARTIN L. EDWARDS AND GEORGE M. SMITH, OF SALEM, OHIO; SAID SMITHASSIGNOR TO SAID EDWARDS.

TUYERE.

SPECIFICATION forming part of Letters Patent No. 249,912, dated November22, 1881.

Application filed September 8,1880. Renewed May 11, 1881. (No model.) V

To all whom it may concern:

Be it known that we, ll/IARTIN LUTHER ED- WARDS and GEORGE MILTON SMITH,citizens of the United States, residing at Salem, in the county ofOolumbiana and State of Ohio, have invented new and useful Improvementsin Tuyeres, of which the following is a specification.

Our invention relates to tuyeres for blacksmiths forges in which ablast-regulating valve and an ash-discharging valve are used andoperatcd by separate levers; and the objects of our invention are toprovide a cheap, simple,

ulating valve, and also to provide means for efi'ectually removing thecinders and clinkers from the ash-discharge and its valve without theuse of pokers. We attain these objects by the construction hereinafterdescribed, and illustrated in the accompanying drawings, in which Figure1 is a view in perspective, and Fig. 2 represents a vertical sectionthrough a tuyere embracing our invention; Fig. 3, a section on the linea: m, Fig. 2; Fig. 4, a top view with the crown-plate removed; Fig. 5, ahorizontal section, taken on the line y y of Fig. 3 and lookin g downupon the discharge-valve of the basin, and Fig. 6 the scraper.

The bed-plate A in the forge-wall is of metal, preferably cast-iron, andis cast with its dependent basin, blast, or ash chamber B, as is nowused in many cases, the projecting bedplate or broad flange supportingthe entire tuyere upon the bed. The bottom of this ashchamber B hasthree triangular openings, at a a, to permit the ready escape of ashesand cinders. Through the im perforate central part of this bottom thereis a screw-hole for the reception of a pivot-screw, b, which carries anunder series of wings, c, composing a rotary valve for closing saidbasin-openings a, and which is opcrated by a lever, O, bringing thewings in position to cover the openings at or to leave them open orpartially open, as desired. Stops e 6 upon the outer bottom of the basinarrest the play of the valve-lever at points of full opening and fullclosing. This valve permits the escape of the deposits of ashes andcinders when open, and when closed the entire blast is directed to thetop orifice.

On the upper side of the bottom of the ashpit B, and attached to therotating valve by means of the pivot-screw b, above described, there areequidistant armed scrapers fff, and being so attached, when the valve ismoved to bring its openings opposite those in the basin the arms of thescrapers are brought to the edges of the said basin-openings, thusremoving all ashes, cinders, or clinkers from the basin, whicharrangement of oscillating cut-tingarms is of great importance and avaluable feature of our invention, for when ashes or other deposits arenotremoved the blastis obstructed and those parts of the tuyere exposedto the fire are burned away.

Under the bed-plate A, at its junction with the dependent basin B andpiercing said basin, are two opposite openings, 9 g, for the receptionof a pushing valve-rod, D, projecting from the tuyere at a sufficientdistance to come just outside the forge, where it is operated toregulate at will an oval or hemispherical swinging valve, E, whichlatter is attached by a swing-yoke, h h, in seat-holes i i in the upperjunction of the basin with the bed-plate, (although other means might beused,) the said swing-yoke being supported so as to drop the valve atright angles upon an incline, 7c, of the push-rod, so that when thevalve push-rod is operated by pushing it endwise through the openings 1g the ball-valve or globe-valve E is raised up into or lowered out of(in any desired gradation) the orifice lin the crown F of the tuyere,regulating the blast to various kinds of work, as is well understood.

On the bottom of the tuyere-crown, near the orifice, are twoprojections, m m, which pass each side of the swing-yoke h near itsmiddle, serving as guides for the valve E, causing it to move up anddown positively to the orifice, thereby regulating the blast. Theswing-yoke arm h may be provided with an oblong opening or slot near itsmiddle, engaging with but one project-ion, extending through the slot.Ears 0 at the edge of the crown keep it in proper position, and thecrown is made removable.

Thepush-rod, byreason of its seat-holes, may pass in from either rightorleft hand, the action 'of the incline on the rod being the same.

The advantages of our improvement in the manner of closing or regulatingthe valve are apparent and are the result of our construction. a

The bottom oscillating valve, operating in connection with aperforatedbottom of the basin, is not new as applied to tuyeres, and we do notclaim these parts; but the scraper-com bined therewith is new andproduces a new result in tuyeresviz., the scrapingout thoroughly of thedeposits of the ash-pit.

The blast-pipe K is made of longitudinal sections, the lower one ofwhich is integral with the bed-plate, and the upper section is joinedtherewith and with a semi-cylindrical extension, 3, from thecrown-plate, which is a separate casting, screwed to the bed-plate, soas to be renewed when necessary.

The fire can be kept alive when the workman stops or is called away fora while by opening the bottom valve. It is important, also, to noticethat the means for regulating the blast are arranged above and at alltimes free from the accumulating cinders in the basin.

The valve and its operating-rod are of separate and distinct parts, andtheir arrangement and relation to each other are such that they can beremoved and replaced by others by removing the crown-plate. Should onebecome warped, such warping will not affect the proper adjustment of thevalve in relation to the blast-orifice. The support for the valve iscentral therewith/and its adjustment, while being vertical, is efl'ectedby the sliding action of anincline, upon which the valve rests, and assuch sliding action of the incline is at rig-ht angles to theadjustmeutof the valve, the latteris supported withoutdanger of bei n gpressed down from above or of being moved when the desired adjustment ismade.

It is not necessary that the oscillating scraper be secured to andoperated by the bottom valve,-

as they may be operated separately; but the scraper must operate uponthe inner surface of the perforated bottom of the basin, and in suchrelation to such perforations as to clear the accumulations.

We claim 1. In a tuyere, in combination with the ashdischarge, the armedscraper operated by the valve-lever O, substantially as and for thepurpose described.

2. In a tuyere, the combination, with the regulating-valve swung in thebasin, of the push-rod provided with an incline for supporting, raising,and lowering said valve, substantially as described.

3. In a tuyere, a regulating-valve swung by a yoke from the basin, asdescribed, in combination with a push-rod provided with an incline andpassing through holes in the basin, and guide-projections m from theunder side of the crown, substantially as describedf 4. The combinationof the oscillating ashdischarging valve, arranged on the under side .ofthe perforated bottom of the basin, with an oscillating scraper,arranged upon the upper side of said perforated bottom and operating toeffect the discharge of the ashes when said valve is open, substantiallyas specified.

In testimony whereof we have hereunto set our hands in the presence oftwo subscribing witnesses.

MARTIN LUTHER EDWARDS. GEORGE MILTON SMITH.

Witnesses:

THOMAS KENNETT, PETER AMBLER.

